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~ 4 ~ 3. Monthly mdSS diagram analyses show that a diminished flow at Julesburg compared to Balzac has occurred (1) during lhe months of Septem- ber and October since about 1952; (2) during November, December, January and February since the 1959 to 1961 period; and (3) during May since 1942. However, during the months of March, April, June, July and August, the relationship of flow at Julesburg with the flow at Balzac has been about the same during recent years as the long-term average. The linear equations relating these two stations for the monthly flows are listed below.' The correlation coefficient for each equ~tion for the 39-year period from 1928 through 1966 is also li~ted. Month Equation Corre I at ion (f lows in acre-feet) Coeff I c lent January Julesburg == 0.99 Balzac + 13,540 0.92 February Julesburg == 1.08 Balzac + 14,600 0.95 March Julesburg == 0.98 Balzac + 14,340 0.96 Apri 1 Julesburg == 0.78 Balzac + 8,720 0.93 May Julesburg == 1002 Balzac - 3,740 0.98 June Julesburg 1.00 Balzac + 550 0.97 July Julesburg == 0.49 Balzac - 10,540 0.92 August Julesburg == 0.81 Balzac .:. ,6,301 0.86 September Julesburg == 0.95 Balzac - 6,930 0.94 October Julesburg == 0.92 Balzac + 4,310 0.80 November Julesburg == 1014 Balzac + 11,400 0.85 December Julesburg == 0.98 Balzac + 13,810 0.90 A noticeable feature of these equations Is that the coefficient of the Balzac flow is near unity during many months. This Indicates that the difference between the flows at the two stations remains relatively con- stant for the wide range of discharges experienced. Relationship of Flow at Julesburq to Flow at Kersey The following items summarize results obtained from correlation analyses and double-mass curves relating Julesburg flows to Kersey flows: 1. The relationship between the annual flow at the Julesburg gage and the Kersey gage is not as well correlated as the Julesburg-Balzac relationship. This is to be expected because of the additional unmeasured inflows entering this section and the large amount of water used and stored between Kersey and Julesburg. The best-fit linear equation for the annual discharge at these two stations is as follows: Julesburg flow == 0.70 Kersey flow - 40,880 acre-feet. The correlation coefficient for the 39 years from 1928 through 1966 is 0.91. 2. The double-mass plot of annual flows at these two stations shows very minor deviations from a straight line. The period between 1942.and